today vice president joe biden is bringing the battle of the gun control right to the heart of the opposition. >> biden is taking his case right to the heart of pro-gun virginia. the move comes after democrats and congress rolled out their plans. and nancy cordes is on capitol hill. nancy, good morning. >> good morning, norah and charlie. they started with perhaps the most controversial weapon, an assaults weapons ban. it's a key component of the recommendations that vice president biden made to the president earlier this month, and today he is heading to richmond, virginia, with several cabinet members to try and sell it. mr. biden is even taking the fight online, making his gun control argument thursday in a web chat. >> i'm much less concerned, quite frankly, about what you'd call an assault weapon than i am the malg zone and the number of rounds that can be held in a magazine. >> the bill senate democrats introduced thursday would ban both. it's a tougher version of the assaults weapons ban that koj let lapse in 2004. this version closes some of the loopholes that manufacturers were able